CN113863126A - Construction method of thin-wall hollow pier - Google Patents
Construction method of thin-wall hollow pier Download PDFInfo
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- CN113863126A CN113863126A CN202111209762.9A CN202111209762A CN113863126A CN 113863126 A CN113863126 A CN 113863126A CN 202111209762 A CN202111209762 A CN 202111209762A CN 113863126 A CN113863126 A CN 113863126A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The application discloses a thin-wall hollow pier construction method, which relates to the technical field of road and bridge construction and comprises the working procedures of prefabricated part construction, hollow pier foundation construction, hollow pier bottom construction, hollow pier body construction and hollow pier top construction. The hollow pier body and the hollow pier top are both manufactured in a prefabricated mode in a ground factory, and then are sequentially connected to the bottom of the hollow pier through the pier body connecting structure, so that the construction operation is simpler and more convenient.
Description
Technical Field
The application relates to the technical field of road and bridge construction, in particular to a thin-wall hollow pier construction method.
Background
The thin-wall hollow pier is a supporting structure for supporting a bridge body of a bridge comprising a viaduct and the like, and comprises a foundation, a solid pier bottom, a hollow pier body and a solid pier top which are sequentially arranged from bottom to top; pier caps are integrally cast on the upper surfaces of the solid pier tops to bear the bridge body.
When the thin-wall hollow pier is constructed, firstly, a foundation pit needs to be dug at a specified position to construct a foundation; then, pouring construction of the solid pier bottom is carried out on the upper surface of the foundation; and then, casting construction of the hollow pier body and construction of the solid pier top are carried out by adopting a slip form, creeping formwork or turnover formwork process, so that construction operation of the thin-wall hollow pier is completed.
In view of the above-mentioned related technologies, the inventor believes that, in the process of constructing the pier body of the thin-wall hollow pier, the constructor needs to perform the operations of lifting upwards, dismounting and mounting the mold for many times, which leads to more complicated construction operations and needs to be improved.
Disclosure of Invention
In order to solve the problem that the construction operation of the thin-wall hollow pier is more complicated, the application provides a thin-wall hollow pier construction method.
The application provides a thin-wall hollow pier construction method which adopts the following technical scheme:
a construction method of a thin-wall hollow pier comprises the following steps:
and (3) prefabricated part construction: prefabricating a hollow pier top and at least one pier body segment according to design requirements;
constructing a hollow pier foundation: digging a foundation pit at a preset place according to design requirements, and constructing a hollow pier foundation;
constructing the bottom of the hollow pier: according to the design requirement, the construction of the bottom of the hollow pier is carried out on the upper surface of the hollow pier foundation;
constructing a hollow pier body: hoisting one of the pier body sections, and fixedly connecting the lower end of the hoisted pier body section with the upper end of the bottom of the hollow pier through a pier body connecting structure; sequentially hoisting the rest multiple pier body sections and fixedly connecting the lower ends of the hoisted pier body sections with the upper ends of the uppermost pier body sections above the bottom of the hollow pier through the pier body connecting structures in sequence;
and (3) constructing a hollow pier top: the hollow pier top is lifted, and the lower end of the hollow pier top is fixedly connected with the upper end of the pier body segment which is positioned above the bottom of the hollow pier and is positioned at the uppermost position through the pier body connecting structure.
By adopting the technical scheme, the hollow pier body and the hollow pier top are both manufactured in a prefabricated mode in a ground factory and then are sequentially connected to the bottom of the hollow pier through the pier body connecting structure, so that the construction operation is simpler and more convenient; the pouring construction of the hollow pier body and the hollow pier top is carried out on the ground, so that the operation of lifting or dismounting and mounting a mould at a high position is reduced, the convenience of construction operation is improved, and meanwhile, the construction period is favorably shortened; the hollow pier body is formed by connecting a plurality of pier body segments through a pier body connecting structure, so that the weight of hoisting at each time is reduced, and the hoisting pressure of the crane is reduced, thereby facilitating the hoisting operation of the crane.
Optionally, the pier body connecting structure comprises an upper connecting cylinder and a lower connecting cylinder; the end wall of one end of the lower connecting cylinder body is sequentially provided with a plurality of connecting ribs along the circumferential direction of the end wall, and each connecting rib is sequentially and fixedly provided with a plurality of connecting plates along the length direction of the connecting rib; one end of the upper connecting cylinder is provided with a plurality of inserting grooves which are in one-to-one correspondence with all the connecting ribs, and each connecting rib can be inserted into the corresponding inserting groove; the peripheral wall of the upper connecting cylinder body at the position of each inserting groove is provided with a material injection hole communicated with the inside of the corresponding inserting groove so as to inject solidifiable filling slurry into the inserting groove; the one end that the connecting rib was kept away from to lower connecting cylinder is used for the fixed upper end that sets up at the bottom of the hollow pier or one of them one end of pier shaft segmentation, the one end that the grafting groove was kept away from to last connecting cylinder is used for the fixed lower extreme that sets up at hollow pier top or the other end of pier shaft segmentation.
By adopting the technical scheme, when the pier body connecting structure is used for connecting construction, the connecting plate is inserted into the inserting groove along with the connecting rib, and then the filling slurry is injected into the inserting groove from the material injection hole by a constructor; after the filling slurry is solidified, the solidified filling slurry is fixedly connected with the inner side wall of the insertion groove, and the connecting plate is located inside the solidified filling slurry, so that the upper connecting cylinder body and the lower connecting cylinder body are fixedly connected with each other.
Optionally, the connecting ribs include fixing ribs fixedly connected with the lower connecting cylinder and extending ribs connected with the fixing ribs, and the corresponding connecting plates are located on one side of the extending ribs; the thickness direction of the connecting plate is arranged along the length direction of the extending rib; the inside wall of inserting groove is provided with the holding tank, but extension muscle relatively fixed muscle rotates so that whole connecting plate removes to the holding tank in.
By adopting the technical scheme, after the extension ribs and the connecting plates are inserted into the inserting grooves, a certain gap is kept between the upper connecting cylinder and the lower connecting cylinder, and constructors rotate the extension ribs through the gap to enable the connecting plates to move into the accommodating grooves; when the filling slurry is injected from the material injection hole, the filling slurry can fill the inner space of the accommodating groove, and at the moment, the filling slurry is filled between the connecting plate and the inner side wall of the accommodating groove; after the filling slurry solidifies, the connecting plate all supports tightly through the inside wall of filling slurry and holding tank along the both sides of the thickness direction of self to increased and extended the joint strength between muscle and the last connecting cylinder body, reduced the possibility that extension muscle and inserting groove break away from, thereby improved the stability of being connected between connecting cylinder body and the lower connecting cylinder body.
Optionally, one end, far away from the lower connection barrel, of the fixed rib is fixedly provided with a connection sleeve, and the extension rib is in threaded connection with the inner side wall of the connection sleeve.
Through adopting above-mentioned technical scheme, adapter sleeve and fixed muscle fixed connection, extend muscle and adapter sleeve's inside wall threaded connection, when making extend muscle and fixed muscle link to each other, extend the muscle and can rotate by relatively fixed muscle, simple structure, construction convenience.
Optionally, a fixing rod is fixedly arranged at one end of the extending rib close to the fixing rib; the positions of the lower connecting cylinder body, which are positioned at the two sides of each fixed rib, are fixedly provided with positioning rods which are used for being abutted against the fixed rods to limit the rotation of the extending ribs; when the fixed rod is abutted against one of the fixed rods, all the corresponding connecting plates are positioned in the inserting grooves; when the dead lever when with another locating lever butt, corresponding whole the connecting plate all is located the holding tank.
By adopting the technical scheme, when the fixed rod is abutted against one of the positioning rods, all the corresponding connecting plates are positioned in the accommodating groove so as to facilitate the extending ribs to be inserted into the inserting groove; when dead lever and another locating lever butt, the whole connecting plates that correspond all are located the holding tank to reduce because constructor rotates the too big or undersize of range that extends the muscle and lead to the connecting plate to be difficult to fully rotate the possibility to the holding tank in.
Optionally, the number of the material injection holes communicated with the inside of each insertion groove is two; one of the material injection holes is positioned close to the notch of the insertion groove, and the other material injection hole is positioned close to the bottom of the insertion groove; when filling slurry is injected, the filling slurry is injected from the material injection hole at the position close to the notch of the insertion groove, and when the filling slurry overflows from the material injection hole at the position close to the groove of the insertion groove, the material injection operation is stopped.
By adopting the technical scheme, when the pier body connecting structure is in connection construction, the notch of the insertion groove is arranged downwards; the filling slurry is injected from the material injection hole at the groove opening close to the insertion groove, so that the filling slurry is fully filled in the insertion groove, and the strength of the structure of the solidified filling slurry is improved.
Optionally, the upper connection cylinder is provided with an insertion convex ring along the circumferential direction of the corresponding insertion groove at the position of each insertion groove; and the lower connecting cylinder body is provided with an inserting ring groove for inserting the corresponding inserting convex ring at the position of each connecting rib.
By adopting the technical scheme, the insertion convex ring is in insertion fit with the insertion ring groove, so that the contact area between the lower connecting cylinder and the upper connecting cylinder can be increased, the sealing property of connection between the end wall of the upper connecting cylinder at the position of the insertion groove and the lower connecting cylinder is improved, and the possibility of leakage of the filling slurry is reduced.
Optionally, a sealing ring which is used for abutting against the insertion convex ring is embedded in the insertion ring groove.
Through adopting above-mentioned technical scheme, the leakproofness of being connected between the diapire of grafting bulge loop and grafting annular can be improved to the sealed ring circle, further reduces the filling thick liquids and takes place the possibility of leaking.
Optionally, a guide rod is fixedly arranged at one end of the lower connecting cylinder body, which is provided with the connecting rib, and a guide hole for being in plug-in fit with the guide rod is arranged on the upper connecting cylinder body; the length of the end wall of the guide rod protruding out of the lower connecting cylinder body is larger than the length of the end wall of the connecting rib protruding out of the lower connecting cylinder body.
By adopting the technical scheme, the guide rod is matched with the guide hole, so that each inserting convex ring is favorably and quickly aligned with the corresponding inserting ring groove, and the inserting convex rings are conveniently and cooperatively inserted with the inserting ring grooves; meanwhile, the quick alignment of the insertion groove and the corresponding connecting rib is facilitated.
Optionally, the mutually connected ends of the upper connection cylinder and the lower connection cylinder are jointly and hermetically connected with a waterproof piece.
Through adopting above-mentioned technical scheme, waterproof can seal the clearance between connecting cylinder and the lower connecting cylinder, reduces the risk that structures such as rainwater got into the clearance and corrodes the splice bar.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the prefabricated pier body sections and the corresponding prefabricated hollow pier tops are connected with each other through the pier body connecting structures and fixedly connected with the bottom of the hollow pier to form the thin-wall hollow pier, so that the operations of disassembling, assembling and lifting a mold at a high position are reduced, the construction operation of the thin-wall hollow pier is more convenient and labor-saving, and the construction period is favorably shortened;
2. after the connecting plate is inserted into the inserting groove along with the extending ribs, the constructor rotates the extending ribs to move the connecting plate into the accommodating groove; the connecting plates and the inner side wall of the accommodating groove are mutually abutted and extruded through solidified filling slurry, so that the connecting strength and the connecting stability between the upper connecting cylinder and the lower connecting cylinder are improved, the structure is simple, and the operation is convenient and fast;
3. two injected holes mutually support, and the filling slurry flows from bottom to top, is favorable to filling the slurry and fully fills in inserting groove and holding tank to be favorable to improving the structural strength of the filling slurry after solidifying.
Drawings
FIG. 1 is a schematic view showing the structure of a thin-walled hollow pier according to an embodiment of the present application
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1.
Fig. 3 is an enlarged view of a portion B in fig. 2.
Fig. 4 is an exploded view for showing a pier shaft connection structure.
Fig. 5 is an enlarged view of a portion C in fig. 4.
Description of reference numerals:
1. a hollow pier foundation; 2. a hollow pier bottom; 3. a hollow pier body; 31. a pier shaft segment; 4. jacking the hollow pier; 5. a pier body connecting structure; 51. the upper connecting cylinder body; 511. inserting grooves; 5111. accommodating grooves; 5112. a material injection hole; 512. inserting a convex ring; 513. a guide hole; 52. the lower connecting cylinder body; 521. connecting ribs; 5211. fixing the ribs; 52111. a connecting sleeve; 5212. stretching the ribs; 52121. a connecting plate; 52122. fixing the rod; 522. inserting ring grooves; 5221. sealing the ring; 523. a guide bar; 524. positioning a rod; 6. a waterproof member.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
A thin-wall hollow pier is disclosed, referring to fig. 1, and comprises a hollow pier foundation 1, a hollow pier bottom 2, a hollow pier body 3 and a hollow pier top 4. In this embodiment, the hollow pier foundation 1 is a pipe pile foundation, and the hollow pier foundation 1 is cast-in-place. The hollow pier bottom 2 is cast on the upper surface of the hollow pier foundation 1 in situ. The hollow pier body 3 comprises prefabricated pier body sections 31, the number of the pier body sections 31 can be one, the number of the pier body sections 31 can be two, and the number of the pier body sections 31 can be three or more; in this embodiment, the number of pier shaft segments 31 is three. The hollow pier top 4 is cast in a prefabricated mode in a factory.
Referring to fig. 1, all pier body sections 31 are fixedly connected end to end by pier body connecting structures 5; during site construction, the lower end of the pier body section 31 positioned at the lowest part is fixedly connected with the pier bottom 2 of the hollow pier through the pier body connecting structure 5; then the lower end of the prefabricated hollow pier top 4 is fixedly connected with the upper end of the pier body section 31 positioned at the uppermost part through the pier body connecting structure 5.
Referring to fig. 1, the pier shaft connecting structure 5 includes an upper connecting cylinder 51 and a lower connecting cylinder 52, the cross-sectional shape of the upper connecting cylinder 51 and the cross-sectional shape of the lower connecting cylinder 52 are the same as the cross-sectional shape of the pier shaft section 31, and the lower end wall of the upper connecting cylinder 51 is used for being fixedly connected with the upper end wall of the lower connecting cylinder 52. The lower connecting cylinder 52 is used for being arranged at the upper end of the hollow pier bottom 2 and one end of the pier body section 31, and the upper connecting cylinder 51 is used for being arranged at the lower end of the hollow pier top 4 and the other end of the pier body section 31. In this embodiment, the upper connecting cylinder 51 disposed at one end of the pier shaft segment 31 and the lower connecting cylinder 52 disposed at the other end are integrally cast with the pier shaft segment 31; the upper connecting cylinder body 51 arranged at the lower end of the hollow pier top 4 and the hollow pier top 4 are integrally cast and molded; the lower connecting cylinder 52 arranged at the bottom 2 of the hollow pier is positioned at the upper end of the bottom 2 of the hollow pier and is integrally cast with the bottom 2 of the hollow pier.
Referring to fig. 2, the upper end wall of the lower connecting cylinder 52 is provided with a plurality of connecting ribs 521 in sequence along the circumferential direction thereof; the connecting ribs 521 include fixing ribs 5211 and extending ribs 5212. One end of the fixing rib 5211 is integrally poured into the lower connecting cylinder 52, and the other end of the fixing rib 5211 extends upwards and protrudes out of the upper end wall of the lower connecting cylinder 52; one end of the extending rib 5212 is connected to the upper end of the fixing rib 5211, and the other end of the extending rib 5212 extends upward. The outer peripheral wall of the extension rib 5212 is welded and fixed with a plurality of connecting plates 52121, all the connecting plates 52121 are arranged at intervals along the length direction of the extension rib 5212 in sequence, and all the connecting plates 52121 are located on one side of the extension rib 5212 along the radial direction of the connecting plate. The thickness direction of each connecting plate 52121 is arranged along the length of the extending rib 5212.
Referring to fig. 2, the upper end of the fixing rib 5211 is welded and fixed with a connecting sleeve 52111, one end of the extending rib 5212 close to the fixing rib 5211 is in threaded connection with the inner side wall of the connecting sleeve 52111, and the extending rib 5212 can rotate around the axis thereof. A plurality of inserting grooves 511 are integrally cast and formed on the lower end wall of the upper connecting cylinder body 51, and all the inserting grooves 511 correspond to all the extending ribs 5212 one by one; each of the extension ribs 5212 and all of the corresponding connection plates 52121 and fixing ribs 5211 can be inserted into the corresponding insertion groove 511 at the same time. An accommodating groove 5111 is integrally formed on the inner side wall of the insertion groove 511; after the extension ribs 5212 and all the connection plates 52121 are inserted into the corresponding insertion grooves 511, a certain gap is kept between the upper connection cylinder 51 and the lower connection cylinder 52, and then a constructor rotates the extension ribs 5212 through the gap, so that the extension ribs 5212 rotate relative to the fixed ribs 5211 to drive all the connection plates 52121 to move into the accommodating grooves 5111; finally, the upper connection cylinder 51 is moved downward so that the lower end wall of the upper connection cylinder 51 abuts against the upper end wall of the lower connection cylinder 52.
Referring to fig. 2, the outer peripheral wall of the upper connecting cylinder 51 at each insertion groove 511 is integrally cast with a material injection hole 5112, and the material injection hole 5112 is communicated with the inside of the corresponding insertion groove 511; in this embodiment, the number of the injection holes 5112 communicating with the inside of each insertion groove 511 is two, wherein one injection hole 5112 is located at a position close to the bottom of the insertion groove 511, and the other injection hole 5112 is located at a position close to the opening of the insertion groove 511. When the lower end wall of the upper connection cylinder 51 abuts against the upper end wall of the lower connection cylinder 52, the constructor can inject the filling slurry through the material injection hole 5112 located at the position close to the notch of the insertion groove 511; in this embodiment, the filling slurry is a special high-strength grouting material. When the filling slurry flows out from the corresponding injection hole 5112 located at the bottom of the slot near the insertion slot 511, the constructor stops injecting the slurry. At this time, the filling slurry is fully filled in the inserting groove 511 and the accommodating groove 5111; after the filling slurry is solidified, the extension ribs 5212 and the connection plates 52121 are fixed to the upper connection cylinder 51, so that the upper connection cylinder 51 is fixedly connected to the lower connection cylinder 52.
Referring to fig. 2 and 3, an insertion convex ring 512 is integrally formed on the lower end wall of the upper connection cylinder 51 at the position of each insertion groove 511, and the corresponding insertion groove 511 is located inside the insertion convex ring 512. The lower connecting cylinder 52 is integrally formed with an inserting ring groove 522 at each position of the fixing rib 5211; the insertion convex ring 512 is inserted into the insertion ring groove 522. A sealing ring 5221 is embedded in each inserting ring groove 522, and the sealing ring 5221 is a rubber ring; the plug collar 512 may abut the sealing ring 5221 to improve sealing and reduce the possibility of leakage of the filling slurry.
Referring to fig. 2 and 3, the upper end wall of the lower connection cylinder 52 is fixedly provided with a plurality of guide rods 523 extending upward, and a distance between the upper end wall of the guide rods 523 and the upper end wall of the lower connection cylinder 52 is greater than a distance between the upper end wall of the extension rib 5212 and the lower connection cylinder 52. The upper connecting cylinder 51 is integrally formed with a plurality of guide holes 513, and all the guide holes 513 correspond to all the guide rods 523 one-to-one. During the process of docking the upper connecting cylinder 51 with the lower connecting cylinder 52, each guiding rod 523 can be inserted into the corresponding guiding hole 513, so as to facilitate the alignment of each plugging convex ring 512 with the corresponding plugging ring groove 522.
Referring to fig. 2, a waterproof member 6 is commonly connected between the lower end wall of the upper connection cylinder 51 and the upper end wall of the lower connection cylinder 52, the waterproof member 6 may be a waterproof roll, the waterproof member 6 may also be a rubber pad, and the waterproof member 6 may also be a water-swelling water stop or other structural members with a sealing connection function; in this embodiment, the waterproof member 6 is a waterproof roll. The waterproof member 6 is wound around and adhesively fixed to the outer peripheral walls of the mutually connected ends of the upper and lower connection cylinders 51, 52 to seal the gap between the lower end wall of the upper connection cylinder 51 and the upper end wall of the lower connection cylinder 52.
Referring to fig. 4 and 5, a fixing rod 52122 is fixedly welded to one end of the extending rib 5212 adjacent to the fixing rib 5211. Positioning rods 524 are integrally cast at the positions, which are positioned at the two sides of each fixing rib 5211, on the upper end wall of the lower connecting cylinder 52; in the process of rotation of the extension bar 5212, the fixing rods 52122 can be abutted against each of the positioning rods 524 to limit the rotation of the extension bar 5212.
Referring to fig. 2 and 5, when the fixing rod 52122 abuts one of the positioning rods 524, all of the connecting plates 52121 are aligned with the insertion groove 511 so as to facilitate the engagement of the extension ribs 5212 with the insertion groove 511; when the fixing rod 52122 abuts against the other fixing rod 524, the connecting plate 52121 is located in the receiving groove 5111, so as to reduce the possibility that the connecting plate 52121 moves out of the receiving groove 5111 due to the excessive rotation amplitude of the extension rod.
The embodiment of the application discloses a thin-wall hollow pier construction method which comprises prefabricated part construction, hollow pier foundation construction, hollow pier bottom construction, hollow pier body construction and hollow pier top construction. Wherein, the construction of the prefabricated part is arranged between the constructions of the hollow pier bodies; in this embodiment, the construction of the prefabricated member and the construction of the hollow pier foundation are started simultaneously. The concrete construction steps are as follows:
s00: and (3) prefabricated part construction: according to design requirements, constructors build moulds for pouring the pier body sections 31 and the hollow pier tops 4 in a factory, then perform concrete pouring to obtain the pier body sections 31 and the hollow pier tops 4, and integrally pour and form the corresponding lower connecting cylinder 52 or upper connecting cylinder 51;
s10: constructing a hollow pier foundation: the constructor excavates the foundation pit at the preset place of the construction site according to the design requirement and carries out the construction of the hollow pier foundation 1;
s20: constructing the bottom of the hollow pier: after the hollow pier foundation 1 is solidified, constructors tie up a steel reinforcement framework on the upper surface of the hollow pier foundation 1 and install a template according to design requirements, then perform concrete pouring to obtain the hollow pier bottom 2, and integrally pour and form the corresponding lower connecting cylinder 52.
S30: constructing a hollow pier body: after the hollow pier bottom 2 is solidified, a constructor lifts one of the prefabricated pier body sections 31 through a crane and keeps the corresponding upper connecting cylinder 51 in a downward setting state. Then, the constructor moves the block body section 31 slowly to above the hollow block bottom 2 by the crane and aligns the corresponding lower connecting cylinder 52 with the upper connecting cylinder 51 located at the hollow block bottom 2.
The constructor operates the crane to slowly move the pier shaft segment 31 downward and insert the guide rod 523 into the guide hole 513; after the extension bar 5212 is inserted into the insertion groove 511, a constructor rotates the extension bar 5212 by a wrench to move the connection plate 52121 into the receiving groove 5111; then, the pier shaft section 31 is continuously lowered until the lower end wall of the upper connecting cylinder 51 is abutted to the upper end wall of the lower connecting cylinder 52;
finally, the constructor injects the filling slurry into the inserting groove 511 through the material injecting hole 5112;
in the same way, constructors fixedly connect the rest pier body sections 31 with the pier body sections 31 on the hollow pier bottom 2 in sequence;
s40: and (3) constructing a hollow pier top: and (4) hoisting the hollow pier top 4, and then fixedly connecting the hollow pier top 4 to the upper end of the uppermost pier body segment 31 in the construction mode in the step S30, so that the construction of the thin-wall hollow pier is completed.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A construction method of a thin-wall hollow pier is characterized by comprising the following steps: the method comprises the following steps:
and (3) prefabricated part construction: prefabricating a hollow pier top (4) and at least one pier body section (31) according to design requirements;
constructing a hollow pier foundation: digging a foundation pit at a preset place according to design requirements, and constructing a hollow pier foundation (1);
constructing the bottom of the hollow pier: according to design requirements, constructing the hollow pier bottom (2) on the upper surface of the hollow pier foundation (1);
constructing a hollow pier body: one of the pier body sections (31) is lifted, and the lower end of the lifted pier body section (31) is fixedly connected with the upper end of the hollow pier bottom (2) through a pier body connecting structure (5); then sequentially hoisting the rest multiple pier body sections (31) and sequentially connecting the lower ends of the hoisted pier body sections (31) with the upper ends of the uppermost pier body sections (31) positioned above the hollow pier bottom (2) through the pier body connecting structures (5);
and (3) constructing a hollow pier top: the hollow pier top (4) is lifted, and the lower end of the hollow pier top (4) is fixedly connected with the upper end of the pier body section (31) which is positioned above the hollow pier bottom (2) and is positioned at the uppermost position through the pier body connecting structure (5).
2. The thin-wall hollow pier construction method according to claim 1, wherein: the pier body connecting structure (5) comprises an upper connecting cylinder body (51) and a lower connecting cylinder body (52); the end wall of one end of the lower connecting cylinder body (52) is sequentially provided with a plurality of connecting ribs (521) along the circumferential direction, and each connecting rib (521) is sequentially and fixedly provided with a plurality of connecting plates (52121) along the length direction; one end of the upper connecting cylinder body (51) is provided with a plurality of inserting grooves (511) which are in one-to-one correspondence with all the connecting ribs (521), and each connecting rib (521) can be inserted into the corresponding inserting groove (511); the peripheral wall of the upper connecting cylinder (51) at the position of each insertion groove (511) is provided with a material injection hole (5112) communicated with the interior of the corresponding insertion groove (511) for injecting solidifiable filling slurry into the insertion groove (511); one end, far away from the connecting rib (521), of the lower connecting cylinder body (52) is used for being fixedly arranged at the upper end of the bottom (2) of the hollow pier or at one end of the pier body section (31), and one end, far away from the insertion groove (511), of the upper connecting cylinder body (51) is used for being fixedly arranged at the lower end of the top (4) of the hollow pier or at the other end of the pier body section (31).
3. The thin-wall hollow pier construction method according to claim 2, wherein: the connecting ribs (521) comprise fixing ribs (5211) fixedly connected with the lower connecting cylinder body (52) and extending ribs (5212) connected with the fixing ribs (5211), and the corresponding connecting plates (52121) are positioned on one side of the extending ribs (5212); the thickness direction of the connecting plate (52121) is arranged along the length direction of the extending rib (5212); the inner side wall of the insertion groove (511) is provided with an accommodating groove (5111), and the extending ribs (5212) can rotate relative to the fixing ribs (5211) so that all the connecting plates (52121) can move into the accommodating groove (5111).
4. The thin-walled hollow pier construction method according to claim 3, wherein: the fixed rib (5211) is kept away from one end of the lower connecting cylinder body (52) and is fixedly provided with a connecting sleeve (52111), and the extending rib (5212) is in threaded connection with the inner side wall of the connecting sleeve (52111).
5. The thin-walled hollow pier construction method according to claim 3, wherein: a fixing rod (52122) is fixedly arranged at one end of the extending rib (5212) close to the fixing rib (5211); the positions of the lower connecting cylinder body (52) on the two sides of each fixing rib (5211) are fixedly provided with positioning rods (524) which are used for being abutted against the fixing rods (52122) to limit the rotation of the extending ribs (5212); when the fixing rod (52122) abuts against one of the positioning rods (524), all corresponding connecting plates (52121) are positioned in the insertion groove (511); when the fixing rod (52122) abuts against the other fixing rod (524), all the corresponding connecting plates (52121) are positioned in the accommodating groove (5111).
6. The thin-wall hollow pier construction method according to claim 2, wherein: the number of the material injection holes (5112) communicated with the interior of each insertion groove (511) is two; one of the material injection holes (5112) is positioned at a position close to the notch of the insertion groove (511), and the other material injection hole (5112) is positioned at a position close to the bottom of the insertion groove (511); when filling slurry is injected, the filling slurry is injected from a material injection hole (5112) positioned at the groove opening close to the insertion groove (511), and when the filling slurry overflows from the material injection hole (5112) positioned at the groove bottom close to the insertion groove (511), the material injection operation is stopped.
7. The thin-wall hollow pier construction method according to claim 6, wherein: the upper connecting cylinder (51) is provided with an inserting convex ring (512) at the position of each inserting groove (511) along the circumferential direction of the corresponding inserting groove (511); the lower connecting cylinder body (52) is provided with an inserting ring groove (522) for inserting the corresponding inserting convex ring (512) at the position of each connecting rib (521).
8. The thin-walled hollow pier construction method according to claim 7, wherein: and a sealing ring (5221) which is used for being abutted against the inserting convex ring (512) is embedded in the inserting ring groove (522).
9. The thin-walled hollow pier construction method according to claim 2 or 7, wherein: one end of the lower connecting cylinder body (52) provided with a connecting rib (521) is fixedly provided with a guide rod (523), and the upper connecting cylinder body (51) is provided with a guide hole (513) which is in plug fit with the guide rod (523); the length of the guide rod (523) protruding out of the end wall of the lower connecting cylinder body (52) is larger than the length of the connecting rib (521) protruding out of the end wall of the lower connecting cylinder body (52).
10. The thin-wall hollow pier construction method according to claim 2, wherein: the mutually connected ends of the upper connecting cylinder body (51) and the lower connecting cylinder body (52) are jointly connected with a waterproof piece (6) in a sealing way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111209762.9A CN113863126B (en) | 2021-10-18 | 2021-10-18 | Construction method of thin-wall hollow pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111209762.9A CN113863126B (en) | 2021-10-18 | 2021-10-18 | Construction method of thin-wall hollow pier |
Publications (2)
| Publication Number | Publication Date |
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| CN113863126A true CN113863126A (en) | 2021-12-31 |
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| KR20110008752A (en) * | 2009-07-21 | 2011-01-27 | 한국건설기술연구원 | Precast concrete segments for constructing bridge piers with elongated round holes surrounding reinforcing bars and the method using the same |
| CN203284729U (en) * | 2013-06-08 | 2013-11-13 | 上海市城市建设设计研究总院 | Screwing-type connecting structure of stand column bearing platform and guide rod |
| CN107227685A (en) * | 2017-08-07 | 2017-10-03 | 上海应用技术大学 | A kind of spliced bridge pier structure of rotary buckle and corresponding joining method |
| CN108396640A (en) * | 2018-04-23 | 2018-08-14 | 南昌大学 | A kind of assembly concrete pier column structure |
| CN108951404A (en) * | 2018-08-10 | 2018-12-07 | 苏交科集团股份有限公司 | Cross connection structure and connection method for segment prefabricated pier stud |
| CN110685215A (en) * | 2019-09-23 | 2020-01-14 | 福建工程学院 | Semi-assembled combined pier and construction method thereof |
| CN113123221A (en) * | 2020-01-10 | 2021-07-16 | 中国国家铁路集团有限公司 | Prefabricated assembled hollow pier based on UHPC joint and construction method |
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| KR20110008752A (en) * | 2009-07-21 | 2011-01-27 | 한국건설기술연구원 | Precast concrete segments for constructing bridge piers with elongated round holes surrounding reinforcing bars and the method using the same |
| CN203284729U (en) * | 2013-06-08 | 2013-11-13 | 上海市城市建设设计研究总院 | Screwing-type connecting structure of stand column bearing platform and guide rod |
| CN107227685A (en) * | 2017-08-07 | 2017-10-03 | 上海应用技术大学 | A kind of spliced bridge pier structure of rotary buckle and corresponding joining method |
| CN108396640A (en) * | 2018-04-23 | 2018-08-14 | 南昌大学 | A kind of assembly concrete pier column structure |
| CN108951404A (en) * | 2018-08-10 | 2018-12-07 | 苏交科集团股份有限公司 | Cross connection structure and connection method for segment prefabricated pier stud |
| CN110685215A (en) * | 2019-09-23 | 2020-01-14 | 福建工程学院 | Semi-assembled combined pier and construction method thereof |
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